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- W2075842160 abstract "The preparation of aminopterin analogs via 6-halomethylpteridine intermediates either were unsuccessful or gave low yields of pteridines by reaction of 2,4,5,6-tetraaminopyrimidine (1) with 2,3-dibromopropionaldehyde (2), 1,1,3-trichloroacetone (11), and 1,1,3-tribromoacetone (12), respectively. Similarly, the preparation of a 6-formylpteridine was unsuccessful by the alkylation of 1 with bromomalonaldehyde and by the addition of the 5-acetyl derivative of 1 to 2-bromopropenal (17). In contrast, the oxidation of 2,4-diaminopteridine-6-methanol (23) with N,N′-dicyclohexylcarbodiimide gave the corresponding 6-formylpteridine 20. In related work, a mechanism for the Waller reaction was suggested by the identification of some of the products resulting from the reaction of 2-bromopropenal with p-aminobenzoyl derivatives." @default.
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- W2075842160 date "1976-06-01" @default.
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- W2075842160 title "Mechanism of the waller reaction. Investigation of methods for the synthesis of pteridines" @default.
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- W2075842160 doi "https://doi.org/10.1002/jhet.5570130328" @default.
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